Google Chrome Annoyances #930349: How to stop google chrome from trying to open pdf, doc etc in google docs

Somehow my google chrome setting not to open Microsoft Office Documents with Google Docs Viewer is lost and I have to disable it again, so here it is:

chrome://extensions

Untick Docs PDF/PowerPoint Viewer by Google

If you ask why I even bother doing it: My dayjob environment does not allow me to open these documents online and through our proxy the error message that I get back from google is something linked to bandwidth (but I'm not sure where it fails exactly and I don't bother).